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package PawsX::DynamoDB::DocumentClient::BatchGet; |
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use strict; |
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use 5.008_005; |
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use Net::Amazon::DynamoDB::Marshaler; |
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use PawsX::DynamoDB::DocumentClient::Util qw( |
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make_assert_arrayref |
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make_assert_hashref |
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unmarshal_attribute_map |
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); |
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use PerlX::Maybe; |
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my $METHOD_NAME = 'batch_get()'; |
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my $ASSERT_HASHREF = make_assert_hashref($METHOD_NAME); |
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my $ASSERT_ARRAYREF = make_assert_arrayref($METHOD_NAME); |
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sub transform_arguments { |
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my $class = shift; |
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my %args = @_; |
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return ( |
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%args, |
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RequestItems => _marshall_request_items($args{RequestItems}), |
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); |
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} |
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sub transform_output { |
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my ($class, $output) = @_; |
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my $response = $output->Responses; |
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return { |
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responses => _unmarshall_responses($output->Responses), |
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unprocessed_keys => _unmarshall_unproc_keys($output->UnprocessedKeys), |
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}; |
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} |
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sub run_service_command { |
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my ($class, $service, %args) = @_; |
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return $service->BatchGetItem(%args); |
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} |
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sub _marshall_request_items { |
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my ($items) = @_; |
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$ASSERT_HASHREF->('RequestItems', $items); |
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return { map { $_ => _marshall_request_item($items->{$_}) } keys %$items }; |
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} |
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sub _marshall_request_item { |
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my ($item) = @_; |
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my $keys = $item->{Keys}; |
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die "$METHOD_NAME: RequestItems entry must have Keys" unless $keys; |
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$ASSERT_ARRAYREF->('Keys', $keys); |
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$ASSERT_HASHREF->('Keys entry', $_) |
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for @$keys; |
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return { |
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%$item, |
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Keys => [ map { dynamodb_marshal($_) } @{$item->{Keys}} ], |
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}; |
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} |
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sub _unmarshall_responses { |
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my ($responses) = @_; |
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return undef unless $responses; |
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my $tables = $responses->Map; |
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return { |
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map { $_ => _unmarshall_response_items($tables->{$_}) } |
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keys %$tables |
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}; |
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} |
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sub _unmarshall_response_items { |
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my ($items) = @_; |
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return [ map { unmarshal_attribute_map($_) } @$items ]; |
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73
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} |
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sub _unmarshall_unproc_keys { |
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my ($unprocessed) = @_; |
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my $tables = $unprocessed->Map; |
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return undef unless %$tables; |
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return { |
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map { $_ => _unmarshall_keys_and_attrs($tables->{$_}) } |
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keys %$tables |
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}; |
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} |
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sub _unmarshall_keys_and_attrs { |
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my ($obj) = @_; |
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my $attr_names; |
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if ($obj->ExpressionAttributeNames) { |
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$attr_names = $obj->ExpressionAttributeNames->Map; |
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}; |
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return { |
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maybe ConsistentRead => $obj->ConsistentRead, |
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maybe ProjectionExpression => $obj->ProjectionExpression, |
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maybe ExpressionAttributeNames => $attr_names, |
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Keys => [ |
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map { unmarshal_attribute_map($_) } @{$obj->Keys} |
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2
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108
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98
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], |
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} |
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} |
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102
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1; |
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__END__ |